chris215
  • chris215
Va is the orbital speed of a satellite at a distance x from the centre of the Earth. If the satellite is at a distance 2x from the centre of the Earth and with the speed of Vb, which of the following statements is correct?
Mathematics
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SOLVED
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katieb
  • katieb
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chris215
  • chris215
va=vb^2
anonymous
  • anonymous
well the answer is Vb = Va^2 Va^2 = Gm/r and Vb^2 = Gm/2r which leads you to get 2(Vb^2) = Va^2 which gets you Vb = Va^2
chris215
  • chris215
these are the only answer choices I have

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anonymous
  • anonymous
this is physics right?
chris215
  • chris215
yeah i already posted it in physics and no one has helped
Loser66
  • Loser66
Is it not that @Marcorie gave you the answer which is b) ??
Loser66
  • Loser66
He was downhill without apply the break, so that he had one more extra simplification and that confused you!! stop at \(2V_b^2=V_a^2\) , which is option b
Loser66
  • Loser66
*applying

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